/*
#include<stdio.h>
int main()
{
int score;
printf("\nplease enter score(score<=100):");
scanf("%d",&score);
if(score=100)
	score=90;	
score=score/10;
switch(score)
{
case 9:
	printf("the grade is A");
	break;
case 8;
	printf("the grade is B");
	break;
defalut:
	printf("the grade is E");
}
}
*/
